{"note":"bim_versions 導入後の保存のみ記録 (それ以前は bim_canonical 上書きで履歴なし)","ok":true,"slug":"u-house-v8s1glee","versions":[{"created_at":"2026-06-13T14:48:45Z","element_count":73,"note":"5軸GA polish 44->97 by M5 (autonomous)","saved_by":"mcp","sha256":"51c7abf17c90564247d037559f523facc8665c4f6cc0c32814aa6ab81e1186c7","version":3},{"created_at":"2026-06-13T14:36:56Z","element_count":130,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"c2d0729a1db82e0d2c7362bd3880a31b3cdc9eb3f398d2f6a41be5bccc30894e","version":2},{"created_at":"2026-06-13T14:36:55Z","element_count":130,"note":"言葉から生成: LDK+主寝室+子供室2+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}